LASER SPECKLE SIMULATION ON A ROUGH WETTING PROBLEM

D. Hofer, B.G. Zagar

Abstract

Computing numerical approximations of the Huygens-Fresnel principle in three dimensions is a rather time (and hardware) demanding task, but thanks to massive parallelization in GPGPU enabled graphics cards these computations can be sped up considerably. A newly developed software framework is capable to simulate a large portion of wave propagation related problems. It seems suited to generate laser speckle images for various real physical setups which were used to measure the surface roughness of sheet metal or the oil film thickness on top of it. This paper gives a short survey on rough wetting theory, it introduces the core parts of the software, and finally it shows some test cases using apertures and their known Fraunhofer diffraction patterns.

Keywords

laser speckle simulation framework, GPGPU, GPUmat, surface roughness, rough wetting

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IMEKO-WC-2012-TC2-O6.pdf

DOI

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IMEKO TC

TC2 - Photonics

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